报告题目：Ionic Liquids as Electrolytes for Supercapacitors and Li Air Batteries
报告人：谢菲尔德大学化学和生物工程系Peter J. Hall教授
报告时间：2014年6月9日(周一)下午14:30
报告地点：曹光彪大楼326会议室
联系人：金属所高明霞副教授
报告摘要：
Room temperature ionic liquids have a number of advantages as electrolytes for certain electrochemical storage applications. In particular, they can have negligible vapour pressure at temperatures up to several hundred °C and also can have enhanced electrochemical stability over more conventional electrolytes such as organic liquids and water bases. Their disadvantages include viscosities that are often too high for practical applications and water/oxygen stability. There is an almost infinite variety of chemical structures possible but only a tiny fraction of these have received serious research investigation and there have been even fewer systematic studies to elucidate the general principles of ionic liquid electrolyte selection. This work illustrates how changes to cation structure, including control of ion size and the inclusion of ether functionalities, can determine the performance of both ionic liquid based supercapacitors and lithium oxygen batteries.
报告人简介：
Peter Hallis Professor of energy storage in the Department of Chemical Engineering in the University of Sheffield. He has worked on energy storage for over 20 years, starting with the development of materials for hydrocarbon gas adsorption in Exxon, then on industrially funded solid-state hydrogen storage. He currently works on materials for batteries and supercapacitors where he is developing new composite electrode materials and electrolytes with enhanced electrochemical stability. His speciality is the manipulation of carbon materials at the nano scale and has applied this to producing electrochemical energy storage devices with improved performance. He is also interested in accurate methods to monitor the state-of-charge and state-of-health of batteries through in situ methods with a view to enhancing battery capacity and lifetime. He represents the UK interests in energy storage in the European Energy Research Alliance, an agency established by the European Commission to direct activities in the Strategic Energy Technologies and Horizon 2020 projects.
His other research interest is in the techno economics of energy storage. He has recently contributed to the EERA/EASE road map for energy storage (http://www.ease-storage.eu/) and is compiling a report on existing and future energy storage in the member states of the European Union. He as recently awarded £4.1M to run the UK Centre for Doctoral Training in energy Storage.
Selected 2013 Publications
l Rennie AJR, Hall PJ. Nitrogen-enriched carbon electrodes in electrochemical capacitors: Investigating accessible porosity using CM-SANS. Physical Chemistry Chemical Physics 15(39):16774-16778 21 Oct 2013
l Rennie AJR, Hall PJ, Sanchez-Ramirez N, Torresi RM. Ether-bond-containing ionic liquids as supercapacitor electrolytes. Journal of Physical Chemistry Letters 4(17):2970-2974 05 Sep 2013
l Wilson IAG, Rennie AJR, Hall PJ, Ding Y, Eames PC, Kelly NJ. Historical daily gas and electrical energy flows through Great Britain's transmission networks and the decarbonisation of domestic heat. Energy Policy 2013
l Mirzaeian M, Hall PJ, Sillars FB, Fletcher I, Shitta-Bey GO, Goldin MM, Jirandehi HF. The effect of operation conditions on the performance of lithium/oxygen batteries. Journal of the Electrochemical Society 160(1) 2013
